[1.7.2]Updating my mod from 1.6 to 1.7- multiple issues

Upon updating my mod from 1.6 to 1.7, I found and fixed most of the errors within the code.  However, there are four bugs which I do not have a solution for:

TileEntityBoiler:

NBT data does not seem to save properly myself, and another coder looked at it and could not find an issue. 

All custom item icons:

None of the items that I have made render their icons properly.

EDIT: this now just applies to items, no longer blocks.

All custom items:

Whenever I leave the world with custom items in the player's inventory and log out, the client hiccups when logging back in and the player inventory becomes corrupt.  I have no idea why.

here is the forge log

http://pastebin.com/SpTp4kJq

Dropbox link to source:

https://dl.dropboxusercontent.com/u/21554636/ThermalDynamics_src.zip